We took M to see Santa this morning and I think she was one of the only kids there that wasn't in hysterics! She's only 4 months old so she was too busy staring at all the lights and ornaments to be scared. Next year she'll be 16 months and I am thinking she might be scared then.
There was a little boy ahead of us...I would guess he was around 5. And he was clinging to his mom for dear life (but not crying). It seems like a 5-year-old would be old enough to understand who Santa is and wouldn't be scared, but I guess it just depends on the kid? I could tell his dad was a little embarrassed.
Is your LO scared of Santa? How old is he/she?